In the world of Naruto, Uchiha Tonan inherits a Legacy Inheritance System. By gaining the approval of others, he can obtain their abilities upon their death. He manipulates the situation, claiming loyalty to Konoha while secretly planning to lead the Uchiha clan in a coup. However, he uses this to his advantage, gaining the trust of the village while secretly absorbing the power of his clan members. On the night of the Uchiha clan massacre, he stands atop the Hokage Rock, coldly watching the destruction of his clan, and then gratefully accepts their power. The next day, he claims his loyalty to Konoha, having used the clan's demise to strengthen himself.